JPS6440939U - - Google Patents
Info
- Publication number
- JPS6440939U JPS6440939U JP1987134509U JP13450987U JPS6440939U JP S6440939 U JPS6440939 U JP S6440939U JP 1987134509 U JP1987134509 U JP 1987134509U JP 13450987 U JP13450987 U JP 13450987U JP S6440939 U JPS6440939 U JP S6440939U
- Authority
- JP
- Japan
- Prior art keywords
- detection means
- output
- subtraction
- clock signal
- input end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims 6
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Description
第1図はこの考案の一実施例のブロツク図。第
2図はこの考案の一実施例の説明を供するタイミ
ング図。
A……DLL回路、1および2……相関器、3
および4……検波器、5……減算増幅器、6……
クロツク信号発生器、8……PN符号発生器、9
……逆拡散器、11……利得可変増幅器。
FIG. 1 is a block diagram of one embodiment of this invention. FIG. 2 is a timing diagram illustrating one embodiment of the invention. A...DLL circuit, 1 and 2...correlator, 3
and 4...detector, 5...subtraction amplifier, 6...
Clock signal generator, 8...PN code generator, 9
...Despreader, 11...Variable gain amplifier.
Claims (1)
第2の相関出力を検波する第2の検波手段と、第
1の検波手段の出力と第2の検波手段の出力とを
減算し、その減算出力でクロツク信号発生器から
の発生クロツク信号の周波数を制御する減算手段
とを備えた遅延ロツクループ回路において、第1
の検波手段と前記減算手段の一方の入力端との間
および第2の検波手段と前記減算手段の他方の入
力端との間に互に相反する利得調整機能を有する
利得可変増幅器を備えたことを特徴とする遅延ロ
ツクループ回路。 a first detection means for detecting the first correlation output;
A second detection means detects the second correlation output, subtracts the output of the first detection means and the output of the second detection means, and uses the subtraction output to determine the frequency of the clock signal generated from the clock signal generator. a delay lock loop circuit comprising subtracting means for controlling a first
A variable gain amplifier having mutually opposing gain adjustment functions is provided between the second detection means and one input end of the subtraction means and between the second detection means and the other input end of the subtraction means. A delay lock loop circuit featuring:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987134509U JPH0646114Y2 (en) | 1987-09-04 | 1987-09-04 | Delay locked loop circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987134509U JPH0646114Y2 (en) | 1987-09-04 | 1987-09-04 | Delay locked loop circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6440939U true JPS6440939U (en) | 1989-03-10 |
JPH0646114Y2 JPH0646114Y2 (en) | 1994-11-24 |
Family
ID=31393329
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1987134509U Expired - Lifetime JPH0646114Y2 (en) | 1987-09-04 | 1987-09-04 | Delay locked loop circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0646114Y2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0425242A (en) * | 1990-05-21 | 1992-01-29 | Mitsubishi Electric Corp | Delayed locked loop circuit |
-
1987
- 1987-09-04 JP JP1987134509U patent/JPH0646114Y2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0425242A (en) * | 1990-05-21 | 1992-01-29 | Mitsubishi Electric Corp | Delayed locked loop circuit |
Also Published As
Publication number | Publication date |
---|---|
JPH0646114Y2 (en) | 1994-11-24 |
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